import { login, logout, getInfo } from '@/api/user'
import { getToken, setToken, removeToken } from '@/utils/auth'
import router, { resetRouter, asyncRoutes, constantRoutes,errorRoute } from '@/router'
import cloneDeep from 'lodash/cloneDeep'
const getDefaultState = () => {
  return {
    token: getToken(),
    name: '',
    avatar: ''
  }
}

const filterAsyncRoutes = (asyncRoutes, routes) => {
  return asyncRoutes.filter(asyncRoute => {
    if (routes.indexOf(asyncRoute.name) >= 0) {
      return true
    } else if (asyncRoute.children && asyncRoute.children.length) {
      asyncRoute.children = filterAsyncRoutes(asyncRoute.children, routes)
    } else {
      return false
    }
  })
}

const state = getDefaultState()

const mutations = {
  RESET_STATE: state => {
    Object.assign(state, getDefaultState())
  },
  SET_TOKEN: (state, token) => {
    state.token = token
  },
  // SET_NAME: (state, name) => {
  //   state.name = name;
  // },
  // SET_AVATAR: (state, avatar) => {
  //   state.avatar = avatar;
  // }
  SET_USER_INFO: (state, user) => {
    state.name = user.name
    state.avatar = user.avatar
    state.buttons = user.buttons
  },
  SET_ROUTES: (state, routes) => {
    state.routes = constantRoutes.concat(routes)
    router.addRoutes([...routes,errorRoute])
  }
}

const actions = {
  // user login
  login({ commit }, userInfo) {
    const { username, password } = userInfo
    return new Promise((resolve, reject) => {
      login({ username: username.trim(), password: password })
        .then(data => {
          commit('SET_TOKEN', data.token)
          setToken(data.token)
          resolve()
        })
        .catch(error => {
          reject(error)
        })
    })
  },

  // get user info
  getInfo({ commit, state }) {
    return new Promise((resolve, reject) => {
      getInfo(state.token)
        .then(data => {
          if (!data) {
            return reject('Verification failed, please Login again.')
          }
          commit('SET_USER_INFO', data)

          const routes = filterAsyncRoutes(cloneDeep(asyncRoutes), data.routes)
          commit('SET_ROUTES', routes)

          resolve(data)
        })
        .catch(error => {
          reject(error)
        })
    })
  },

  // user logout
  logout({ commit, state }) {
    return new Promise((resolve, reject) => {
      logout(state.token)
        .then(() => {
          removeToken() // must remove  token  first
          resetRouter()
          commit('RESET_STATE')
          resolve()
        })
        .catch(error => {
          reject(error)
        })
    })
  },

  // remove token
  resetToken({ commit }) {
    return new Promise(resolve => {
      removeToken() // must remove  token  first
      commit('RESET_STATE')
      resolve()
    })
  }
}

export default {
  namespaced: true,
  state,
  mutations,
  actions
}
